Not really...it depends of the grade of damage, you can live with tiny dents and sometimes u cant even notice them while riding. I have gotten repaired rims that i thought where toasted for example, but this was somewhere else, not in the states. If you have some lateral truing to do, that's pretty easy just think and you will find out that is pretty logic, if you have some hops or vertical truing to do and if it not that bad i would leave it as it is, you wont notice it for sure, now if you want to learn just google how to true a wheel and use the brake pads for it, and done with it.

Another thing, that you have a brand new rim doesn't mean it is straight, many times the issue building wheels is that the wheel will be as good as the rim is, but now rims come pretty straight.

Good luck